Sean Gallup/Getty Images
This stream of meltwater on the Rhône glacier in Switzerland has been dyed pink by a team of researchers and students from the Swiss Federal Institute of Technology in Zurich. The idea is to create a visual aid that helps them better monitor the water’s rate of flow. This glacier has lost around 60 per cent of its volume since 1850 and, like most such alpine features, is threatened by rising temperatures.
